static long dbPutFieldLink(DBADDR *paddr, short dbrType, const void *pbuffer, long nRequest) { dbLinkInfo link_info; DBADDR *pdbaddr = NULL; dbCommon *precord = paddr->precord; dbCommon *lockrecs[2]; dbLocker locker; dbFldDes *pfldDes = paddr->pfldDes; long special = paddr->special; struct link *plink = (struct link *)paddr->pfield; const char *pstring = (const char *)pbuffer; struct dsxt *old_dsxt = NULL; struct dset *new_dset = NULL; struct dsxt *new_dsxt = NULL; devSup *new_devsup = NULL; long status; int isDevLink; short scan; STATIC_ASSERT(DBLOCKER_NALLOC>=2); switch (dbrType) { case DBR_CHAR: case DBR_UCHAR: if (pstring[nRequest - 1] != '\0') return S_db_badDbrtype; break; case DBR_STRING: break; default: return S_db_badDbrtype; } status = dbParseLink(pstring, pfldDes->field_type, &link_info); if (status) return status; if (link_info.ltype == PV_LINK && (link_info.modifiers & (pvlOptCA | pvlOptCP | pvlOptCPP)) == 0) { DBADDR tempaddr; if (dbNameToAddr(link_info.target, &tempaddr)==0) { /* This will become a DB link. */ pdbaddr = malloc(sizeof(*pdbaddr)); if (!pdbaddr) { status = S_db_noMemory; goto cleanup; } *pdbaddr = tempaddr; /* struct copy */ } } isDevLink = ellCount(&precord->rdes->devList) > 0 && pfldDes->isDevLink; memset(&locker, 0, sizeof(locker)); lockrecs[0] = precord; lockrecs[1] = pdbaddr ? pdbaddr->precord : NULL; dbLockerPrepare(&locker, lockrecs, 2); dbScanLockMany(&locker); scan = precord->scan; if (isDevLink) { new_devsup = dbDTYPtoDevSup(precord->rdes, precord->dtyp); if (new_devsup) { new_dset = new_devsup->pdset; new_dsxt = new_devsup->pdsxt; } } if (dbCanSetLink(plink, &link_info, new_devsup)) { /* link type mis-match prevents assignment */ status = S_dbLib_badField; goto unlock; } if (isDevLink) { if (precord->dset) { devSup *old_devsup = dbDSETtoDevSup(precord->rdes, precord->dset); if (old_devsup) old_dsxt = old_devsup->pdsxt; } if (new_dsxt == NULL || new_dsxt->add_record == NULL || (precord->dset && old_dsxt == NULL) || (old_dsxt && old_dsxt->del_record == NULL)) { status = S_db_noSupport; goto unlock; } if (scan == menuScanI_O_Intr) { scanDelete(precord); precord->scan = menuScanPassive; } if (old_dsxt) { status = old_dsxt->del_record(precord); if (status) goto restoreScan; } } switch (plink->type) { /* Old link type */ case DB_LINK: case CA_LINK: case CONSTANT: dbRemoveLink(&locker, plink); /* link type becomes PV_LINK */ break; case PV_LINK: case MACRO_LINK: break; /* should never get here */ default: /* Hardware address */ if (!isDevLink) { status = S_db_badHWaddr; goto restoreScan; } break; } if (special) status = dbPutSpecial(paddr, 0); if (!status) status = dbSetLink(plink, &link_info, new_devsup); if (!status && special) status = dbPutSpecial(paddr, 1); if (status) { if (isDevLink) { precord->dset = NULL; precord->pact = TRUE; } goto postScanEvent; } if (isDevLink) { precord->dpvt = NULL; precord->dset = new_dset; precord->pact = FALSE; status = new_dsxt->add_record(precord); if (status) { precord->dset = NULL; precord->pact = TRUE; goto postScanEvent; } } switch (plink->type) { /* New link type */ case PV_LINK: case CONSTANT: dbAddLink(&locker, plink, pfldDes->field_type, pdbaddr); break; case DB_LINK: case CA_LINK: case MACRO_LINK: break; /* should never get here */ default: /* Hardware address */ if (!isDevLink) { status = S_db_badHWaddr; goto postScanEvent; } break; } db_post_events(precord, plink, DBE_VALUE | DBE_LOG); restoreScan: if (isDevLink && scan == menuScanI_O_Intr) { /* undo scanDelete() */ precord->scan = scan; scanAdd(precord); } postScanEvent: if (scan != precord->scan) db_post_events(precord, &precord->scan, DBE_VALUE | DBE_LOG); unlock: dbScanUnlockMany(&locker); dbLockerFinalize(&locker); cleanup: free(link_info.target); return status; }
long epicsShareAPI dbPut(DBADDR *paddr, short dbrType, const void *pbuffer, long nRequest) { dbCommon *precord = paddr->precord; short field_type = paddr->field_type; long no_elements = paddr->no_elements; long special = paddr->special; long offset; long status = 0; dbFldDes *pfldDes; int isValueField; if (special == SPC_ATTRIBUTE) return S_db_noMod; if (dbrType == DBR_PUT_ACKT && field_type <= DBF_DEVICE) { return putAckt(paddr, (unsigned short *)pbuffer, 1, 1, 0); } else if (dbrType == DBR_PUT_ACKS && field_type <= DBF_DEVICE) { return putAcks(paddr, (unsigned short *)pbuffer, 1, 1, 0); } else if (INVALID_DB_REQ(dbrType) || field_type > DBF_DEVICE) { char message[80]; sprintf(message, "dbPut: Request type is %d", dbrType); recGblDbaddrError(S_db_badDbrtype, paddr, message); return S_db_badDbrtype; } if (special) { status = dbPutSpecial(paddr, 0); if (status) return status; } if (no_elements <= 1) { status = dbFastPutConvertRoutine[dbrType][field_type](pbuffer, paddr->pfield, paddr); } else { struct rset *prset = dbGetRset(paddr); if (paddr->special == SPC_DBADDR && prset && prset->get_array_info) { long dummy; status = prset->get_array_info(paddr, &dummy, &offset); } else offset = 0; if (no_elements < nRequest) nRequest = no_elements; if (!status) status = dbPutConvertRoutine[dbrType][field_type](paddr, pbuffer, nRequest, no_elements, offset); /* update array info */ if (!status && paddr->special == SPC_DBADDR && prset && prset->put_array_info) { status = prset->put_array_info(paddr, nRequest); } } if (status) return status; /* check if special processing is required */ if (special) { status = dbPutSpecial(paddr,1); if (status) return status; } /* Propagate monitor events for this field, */ /* unless the field field is VAL and PP is true. */ pfldDes = paddr->pfldDes; isValueField = dbIsValueField(pfldDes); if (isValueField) precord->udf = FALSE; if (precord->mlis.count && !(isValueField && pfldDes->process_passive)) db_post_events(precord, paddr->pfield, DBE_VALUE | DBE_LOG); return status; }
long dbPut(DBADDR *paddr, short dbrType, const void *pbuffer, long nRequest) { dbCommon *precord = paddr->precord; short field_type = paddr->field_type; long no_elements = paddr->no_elements; long special = paddr->special; void *pfieldsave = paddr->pfield; struct rset *prset = dbGetRset(paddr); long status = 0; long offset; dbFldDes *pfldDes; int isValueField; if (special == SPC_ATTRIBUTE) return S_db_noMod; if (dbrType == DBR_PUT_ACKT && field_type <= DBF_DEVICE) { return putAckt(paddr, pbuffer, 1, 1, 0); } else if (dbrType == DBR_PUT_ACKS && field_type <= DBF_DEVICE) { return putAcks(paddr, pbuffer, 1, 1, 0); } else if (INVALID_DB_REQ(dbrType) || field_type > DBF_DEVICE) { char message[80]; sprintf(message, "dbPut: Request type is %d", dbrType); recGblDbaddrError(S_db_badDbrtype, paddr, message); return S_db_badDbrtype; } if (special) { status = dbPutSpecial(paddr, 0); if (status) return status; } if (paddr->pfldDes->special == SPC_DBADDR && prset && prset->get_array_info) { long dummy; status = prset->get_array_info(paddr, &dummy, &offset); /* paddr->pfield may be modified */ if (status) goto done; } else offset = 0; if (no_elements <= 1) { status = dbFastPutConvertRoutine[dbrType][field_type](pbuffer, paddr->pfield, paddr); nRequest = 1; } else { if (no_elements < nRequest) nRequest = no_elements; status = dbPutConvertRoutine[dbrType][field_type](paddr, pbuffer, nRequest, no_elements, offset); } /* update array info */ if (!status && paddr->pfldDes->special == SPC_DBADDR && prset && prset->put_array_info) { status = prset->put_array_info(paddr, nRequest); } /* Always do special processing if needed */ if (special) { long status2 = dbPutSpecial(paddr, 1); if (status2) goto done; } if (status) goto done; /* Propagate monitor events for this field, */ /* unless the field is VAL and PP is true. */ pfldDes = paddr->pfldDes; isValueField = dbIsValueField(pfldDes); if (isValueField) precord->udf = FALSE; if (precord->mlis.count && !(isValueField && pfldDes->process_passive)) db_post_events(precord, pfieldsave, DBE_VALUE | DBE_LOG); /* If this field is a property (metadata) field, * then post a property change event (even if the field * didn't change). */ if (precord->mlis.count && pfldDes->prop) db_post_events(precord, NULL, DBE_PROPERTY); done: paddr->pfield = pfieldsave; return status; }
static long dbPutFieldLink(DBADDR *paddr, short dbrType, const void *pbuffer, long nRequest) { dbCommon *precord = paddr->precord; dbFldDes *pfldDes = paddr->pfldDes; long special = paddr->special; DBLINK *plink = (DBLINK *)paddr->pfield; const char *pstring = (const char *)pbuffer; DBENTRY dbEntry; DBADDR dbaddr; struct dsxt *old_dsxt = NULL; struct dset *new_dset = NULL; struct dsxt *new_dsxt = NULL; long status; int isDevLink; short scan; switch (dbrType) { case DBR_CHAR: case DBR_UCHAR: if (pstring[nRequest - 1] != '\0') return S_db_badDbrtype; break; case DBR_STRING: break; default: return S_db_badDbrtype; } dbInitEntry(pdbbase, &dbEntry); status = dbFindRecord(&dbEntry, precord->name); if (!status) status = dbFindField(&dbEntry, pfldDes->name); if (status) goto finish; isDevLink = ellCount(&precord->rdes->devList) > 0 && (strcmp(pfldDes->name, "INP") == 0 || strcmp(pfldDes->name, "OUT") == 0); dbLockSetGblLock(); dbLockSetRecordLock(precord); scan = precord->scan; if (isDevLink) { devSup *pdevSup = dbDTYPtoDevSup(precord->rdes, precord->dtyp); if (pdevSup) { new_dset = pdevSup->pdset; new_dsxt = pdevSup->pdsxt; } if (precord->dset) { pdevSup = dbDSETtoDevSup(precord->rdes, precord->dset); if (pdevSup) old_dsxt = pdevSup->pdsxt; } if (new_dsxt == NULL || new_dsxt->add_record == NULL || (precord->dset && old_dsxt == NULL) || (old_dsxt && old_dsxt->del_record == NULL)) { status = S_db_noSupport; goto unlock; } if (scan == menuScanI_O_Intr) { scanDelete(precord); precord->scan = menuScanPassive; } if (old_dsxt) { status = old_dsxt->del_record(precord); if (status) goto restoreScan; } } switch (plink->type) { /* Old link type */ case DB_LINK: free(plink->value.pv_link.pvt); plink->value.pv_link.pvt = 0; plink->type = PV_LINK; plink->value.pv_link.getCvt = 0; plink->value.pv_link.pvlMask = 0; plink->value.pv_link.lastGetdbrType = 0; dbLockSetSplit(precord); break; case CA_LINK: dbCaRemoveLink(plink); plink->type = PV_LINK; plink->value.pv_link.getCvt = 0; plink->value.pv_link.pvlMask = 0; plink->value.pv_link.lastGetdbrType = 0; break; case CONSTANT: break; /* do nothing */ case PV_LINK: case MACRO_LINK: break; /* should never get here */ default: /* Hardware address */ if (!isDevLink) { status = S_db_badHWaddr; goto restoreScan; } break; } if (special) status = dbPutSpecial(paddr, 0); if (!status) status = dbPutString(&dbEntry, pstring); if (!status && special) status = dbPutSpecial(paddr, 1); if (status) { if (isDevLink) { precord->dset = NULL; precord->pact = TRUE; } goto postScanEvent; } if (isDevLink) { precord->dpvt = NULL; precord->dset = new_dset; precord->pact = FALSE; status = new_dsxt->add_record(precord); if (status) { precord->dset = NULL; precord->pact = TRUE; goto postScanEvent; } } switch (plink->type) { /* New link type */ case PV_LINK: if (plink == &precord->tsel) recGblTSELwasModified(plink); plink->value.pv_link.precord = precord; if (!(plink->value.pv_link.pvlMask & (pvlOptCA|pvlOptCP|pvlOptCPP)) && (dbNameToAddr(plink->value.pv_link.pvname, &dbaddr) == 0)) { /* It's a DB link */ DBADDR *pdbAddr; plink->type = DB_LINK; pdbAddr = dbMalloc(sizeof(struct dbAddr)); *pdbAddr = dbaddr; /* NB: structure copy */; plink->value.pv_link.pvt = pdbAddr; dbLockSetRecordLock(pdbAddr->precord); dbLockSetMerge(precord, pdbAddr->precord); } else { /* Make it a CA link */ char *pperiod; plink->type = CA_LINK; if (pfldDes->field_type == DBF_INLINK) { plink->value.pv_link.pvlMask |= pvlOptInpNative; } dbCaAddLink(plink); if (pfldDes->field_type == DBF_FWDLINK) { pperiod = strrchr(plink->value.pv_link.pvname, '.'); if (pperiod && strstr(pperiod, "PROC")) plink->value.pv_link.pvlMask |= pvlOptFWD; } } break; case CONSTANT: break; case DB_LINK: case CA_LINK: case MACRO_LINK: break; /* should never get here */ default: /* Hardware address */ if (!isDevLink) { status = S_db_badHWaddr; goto postScanEvent; } break; } db_post_events(precord, plink, DBE_VALUE | DBE_LOG); restoreScan: if (isDevLink && scan == menuScanI_O_Intr) { /* undo scanDelete() */ precord->scan = scan; scanAdd(precord); } postScanEvent: if (scan != precord->scan) db_post_events(precord, &precord->scan, DBE_VALUE|DBE_LOG); unlock: dbLockSetGblUnlock(); finish: dbFinishEntry(&dbEntry); return status; }